Hi all,

New guy on the scene here so apologies if I'm in the wrong area, but really hoping that someone might be able to point me in the right direction. .

My 2012 Defender with a 2.2 Puma powerplant has been making 'whooshing' noises whilst accelerating for a day or two. The noise doesn't happen if you just rev the engine in neutral, only when the engine is under load. The noise stops as soon as you depress the clutch to change gear, but then comes straight back in as soon as you release the clutch and get to about 1800rpm. From inside the vehicle it sounds like the noise is coming from around the gearstick and it is definitely very audible from outside when you have the window open.

Whilst driving this evening, the orange engine light came on, and soon after there was a distinct loss of power. Not sure if there is such a thing a limp mode on it? Turning the engine off and back on doesn't affect the engine light.

I'm not very technically minded but am hoping that someone might have some suggestions as to what it might be or how I can at least home in on a few possibilities. If you need any more information in order to help me out, just tell me what you need and I will do my best to answer you.

Thanks

Sounds like a turbo boost has has failed, quite common on all turbo cars.

And the boost fail could be from something as simple as a pipe that has split or come off. Whooshing noise points to this, had it happen on a car once and power was gone.

lynall said:

Sounds like a turbo boost has has failed, quite common on all turbo cars.

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tottot said:

And the boost fail could be from something as simple as a pipe that has split or come off. Whooshing noise points to this, had it happen on a car once and power was gone.

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Thanks for the thoughts guys, that gives me something more focussed to google.

Almost certainly a boost leak. Check all the hoses between the turbo - intercooler - throttle body. Some are difficult to access for a thorough inspection especially the 90 degree bend onto the throttle body as it is behind a birds nest of cooling pipework. Also check the intercooler for splits where the plastic end boxes attach to the metal core. The evidence will be that the metal tags have opened / distorted. Again this is difficult to inspect if you have aircon as the intercooler is a tight fit between the main rad and aircon rad.

Wimblowdriver said:

Almost certainly a boost leak. Check all the hoses between the turbo - intercooler - throttle body. Some are difficult to access for a thorough inspection especially the 90 degree bend onto the throttle body as it is behind a birds nest of cooling pipework. Also check the intercooler for splits where the plastic end boxes attach to the metal core. The evidence will be that the metal tags have opened / distorted. Again this is difficult to inspect if you have aircon as the intercooler is a tight fit between the main rad and aircon rad.

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Thanks Wimblowdriver, investigations will commence soon!